2 years ago

Bobby is 12 years old. His age is nine

Mathematics

1 answer:

KatRina [158]2 years ago

4 0

Answer:

65 because 12 plus 9 is 21 then 3 times 21 is 65

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andrezito [222]

Answer:

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Step-by-step explanation:

The formula that is used to calculate the area of a rectangle is:

$A=lw$

Where "l" is the lenght and "w" is the width.

You know that the area of that rectangle is:

$A=744\ cm^2$

And, according to the exercise, its lenght is 7 more than its width; then:

$l=w+7$

Then, you can make the corresponding substitution into the formula $A=lw$ :

$744=(w+7)w$

Simplify:

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Then, you get:

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$w=24\ cm$

Then, the lenght is:

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